Physical causes of energy-density inhomogenization and stability of energy-density homogeneity in relativistic self--gravitating fluids

2011/01/31 by L. Herrera, L. HERRERA · 7 citations
Earth and Planetary Sciences · Physics and Astronomy · #Cosmology and Gravitation Theories #High-pressure geophysics and materials #Pulsars and Gravitational Waves Research #astro-ph.CO #gr-qc

paper · pdf · doi:10.1142/s0218271811019748

published as Int. J. Mod. Phys. D. 20, 1689 (2011) · 9 pages Revtex. Some changes in the Introduction to fit the version published in Int. J. Mod. Phys. D. Some typos corrected

arxiv created 2011/09/27 · arxiv updated 2015/05/20

Abstract

We identify the factors responsible for the appearance of energy-density inhomogeneities in a self-gravitating fluid, and describe the evolution of those factors from an initially homogeneous distribution. It is shown that a specific combination of the Weyl tensor and/or local anisotropy of pressure and/or dissipative fluxes entails the formation of energy-density inhomogeneities. Different cases are analyzed in detail and in the particular case of dissipative fluids, the role of relaxational processes as well as non-local effects are brought out.

Citations

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